#include <myheader.h>

/*Usage:  */
int main(int argc, char *argv[])
{
    int fd = open(argv[1],O_RDWR);
    
    if(fork() == 0){
      write(fd,"son\n",4);  

    }else{
        write(fd,"father\m",7);
        wait(NULL);
    }
    return 0;
}

